Filter KeystoneJS relationship by id
Ignacio, as I mentioned in my comment earlier, as of this writing, Keystone did not provide he ability to filter relationships by the current model's id. However, inspired by your question, I decided to submit a pull request (PR #609) adding this feature to Keystone.
The new feature will work exactly as you expected. In your use case the code would be:
jury: { winner: { type: Types.Relationship, ref: 'Entry', many: false, filters: { 'contest.id': ':_id', /* <--- filter */ 'contest.state': 'admited' } } }I will post another comment here once the PR is merged. #609 also includes documentation for the relationship filters feature in general so, once merged, the documentation will be included in the Keystone website after the next build.